<!DOCTYPE HTML>
<html class="minimal">
<title>Canvas test: 2d.imageData.create.negative</title>
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<script src="../tests.js"></script>
<link rel="stylesheet" href="../tests.css">
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<body>
<p id="passtext">Pass</p>
<p id="failtext">Fail</p>
<!-- TODO: handle "script did not run" case -->
<p class="output">These images should be identical:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>

<ul id="d"></ul>
<script>
_addTest(function(canvas, ctx) {

var imgdata1 = ctx.createImageData(10, 20);
var imgdata2 = ctx.createImageData(-10, 20);
var imgdata3 = ctx.createImageData(10, -20);
var imgdata4 = ctx.createImageData(-10, -20);
_assertEqual(imgdata1.data.length, imgdata2.data.length, "imgdata1.data.length", "imgdata2.data.length");
_assertEqual(imgdata2.data.length, imgdata3.data.length, "imgdata2.data.length", "imgdata3.data.length");
_assertEqual(imgdata3.data.length, imgdata4.data.length, "imgdata3.data.length", "imgdata4.data.length");


});
</script>

